Control signal generator for the commutating device of a brushle

Details Control signal generator for the commutating device of a brushle Control signal generator for the commutating device of a brushle

1979-12-21

1981-08-11

Hickey, Robert J.

Electricity: motive power systems

Reciprocating or oscillating motor

Energizing winding circuit control

310DIG3, 318254, 322DIG5, H02K 2900

Patent

active

042836646

ABSTRACT:
The control signal generator contains two Hall effect generators which are shifted relative to each other by 90.degree. electrically and magnetically, alao a gating circuit which derives from the Hall signals control signals for the switching elements of the commutating device. In order to make it possible to drive the motor digitally, the invention provides that the gating circuit comprise a combinatorial circit and, succeeding it, a 1-of-4 logic circuit. The combinatorial circuit furnishes two digital drive signals whose switching instants are shifted correspondingly .+-.45.degree. electrically relative to the zero crossings of the Hall signals.

REFERENCES:
patent: 3663877 (1972-05-01), Clark
patent: 3908130 (1975-09-01), Lafuze
patent: 3946292 (1976-03-01), Tanikoshi
patent: 3979651 (1976-09-01), Bringol
patent: 4114073 (1978-09-01), Uzaka
patent: 4130769 (1978-12-01), Karube
patent: 4135120 (1979-01-01), Hoshimi et al.

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